Heat controlling means for charge forming devices



May 5, 1931. R. P. WRIGHT 1,803;784

HEAT CONTROLLING MEANS FOR CHARGE FORMING DEVICES Filed Aug. l5, 1929 4 Sheets-Sheet l l 1| Iv (i )Il QW W l l il NN S IU L .I S: Q l q May 5, 1931. R. P. WRIGHT v 1,803,784

HEAT CONTROLLING MEANS FCR CHARGE FORMING DEVICES Filed Aug.v l5. 1529 4 Sheets-Sheet 2 May 5, 1931. R. P. WRIGHT 1,803,784

HEAT GONTROLLING MEANS FOR CHARGE FORMING DEVICES Filed Aug. l5, 1929 4 Sheets-Sheet 5 May 5, 1931. R. P. WRIGHT 1,803,784

HEAT CONTROLLING MEANS FOR CHARGE FORMING DEVICES Filed Aug. l5, 1929 4 Shee'ts-Sheel 4 Patented May 5, 1931 UNITED sTA'rEs PATENT orales `BEA. P. WRIGHT, OF WASHINGTON, DISTRICT OF COLUMBIA, vASSIIIGrlI'OIR. TO MARVEL I CARBUB'ETOR COMPANY, OF FLINT, MICHIGAN, A CORPORATION OF ILLINOIS HEAT CONTROLLING MEANS FOR. CHAIR-GE FORMING DEVICES Application filed August 15, 1929.

This invention relates to certain new and useful improvements in heat controlling means for charge forming devices and is a modification of my improved heat contr-olgling means for charge forming devices disclosed in my application filed March 25, 1926, Serial-'Number 97,332, the object being to provide novel means for automatically controlling the application of heat to the charge @informing device whereby the temperature of the charge can be regulated to a nicety in order to produce an explosive charge of high efficiency without any danger of overheating the charge throughout the entire range 15g-of operation'of the engine under all atmospheric conditions.

Another object of my invention is to provide means for allowing the charge throttling valve to move a predetermined distance gojghefore the exhaust throttle valve is moved so as to allow the exhaust throttle valve to dwell on its seat while the throttle valve is moving into open position, whereby the exhaust gases will beheld in the heating chamzs'ber so as to heat the charge quickly while the engine is warming up.

A further object ofthe invention is to provide a construction of heat control which is an improvement over the heat control em- 50 lploying a cam for varying the effect of movement of the charge throttling valve on the exhaust controlling valve by the use of a pressure chamber in communication with the cooling medium of the engine, which under 35 ;normal conditions of the engine will hold the cam in its proper position in order that the application of heat will be controlled automatically to a nicety. l

Other and further objects and advantages 40 yof the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings, Figure l is a side elevation of an internal es combustion engine showing the application of my improved construction of pressure controlling means thereto, partly in section; Figure 2 is an elevation on the opp-osite side to that shown in Figure l showing the 50 cam and its manner of mounting and adjust- Serial No. 386,126.

ing the same by the pressure of the water of the cooling system;

Figure 3 is a vertical section through the manifold with the charge forming device detached;

Figure 4 is a. detail View of the guide member and its connection with the throttle and main exhaust valves, and

Figure is an enlarged side elevation of a ture of the heated air passing to the carbureter.

In the construction of carbureter as herein shown I provide the same with a heating jacket 9 having an inlet 10 which is disposed under an outlet ll formed in the exhaust manifold 2 so that the exhaust gases from the exhaust manifold will circulate through the heating jacket 9 to heat the explosive charge produced by said carbureter and it is, of course, understood that the particular construction of heating jacket is not important so long as it is arranged to heat the explosive charge.

The inlet 10 of the heating jacket 9 of the charge forming device is provided with a volume valve 12 mounted on a stem 13 having an arm lll'for operating the same for controlling the volume of exhaust gases passing through kthe heating chamber and is adapted to be operated in conjunction with'4 the controlling mechanism which will be herein described.

Arranged within the exhaust manifold 2 is an exhaust throttle valve l5 of the butterfly type carried by valve stem I6 provided with an arm 17 for operating the same, said valve being so constructed that when .in closed position the exhaust'pa'ssage will be completely closed in order to cause the entire volume of exhaust gases to pass through the heating jacket.

Arranged on the end of the exhaust manifold is a coupling 18 having an exhaust pipe 19 connected thereto which extends in the usual manner to the muffler, not shown. The coupling 18 as herein shown is provided with an inlet nipple 20 from which extends a couduit 21 to an outlet nipple 22 formed on the heating jacket 9 of the carbureter whereby the exhaust gases will be by-passed around the exhaust throttling valve 15 when in closed position so that the exhaust gases will pass through the heating jacket in order to heat the explosive charge.

The carbureter is provided with a throttle valve 23 of the butterfly type carried by shaft 24 provided with an arm 25 to which is connected an operating rod 26 extending to t ie body of the automobile to which the device is attached so that it can be manipulated in the usual manner.

The object of this invention is to control the application of heat to a nicety by the use of pressure so that the temperature of the charge being formed by the carbureter will be controlled and in order to obtain this result I arrange on the shaft 24 of the throttle valve 23, a cam plate 27 which is movably mounted thereon so that it can be turnedon the shaft, the position of the cam being controlled by a link 28 which' is connected to a bell crank 29 to which is connected the'movable wall of a pressure chamber A arranged in the engine water cooling system so that as the pressure in the cooling system increases and decreases, the cam plate will be adjusted as will be hereinafter fully described.

The pressure chamber A has an inlet B and an outlet C, the inlet B being in the nature of a pipe extending from the pump D which is provided with an inlet E in communication with the radiator of the automobile to which the internal combustion engine is used and the outlet C is connected through a suitable pipe to the water jacket of the internal combustion engine.

In the embodiment of the invention as herein shown, the movable wall is in the form of a piston F provided with a piston rod G which has its end connected to the lever 29 and is surrounded by a coil spring H .if'hich normally has the tendency to force the piston downwardly so that when the motor is tionary the cam will be in position to apply the full volume of heating medium to the heating chamber when the engine is first started, the spring being of such a strength that it resists the pressure of the cooling medium until a suiiicient amount of pressure h as been built up caused by the increased speed of the internal combustion engine to move the movable wall upwardly which adjusts the cam plate so as to vary the effect of movement of the heat control in respect to the throttle valve.

/ hile I have shown one embodiment of my invention, it is, of course, understood that my invention consists broadly in arranging a pressure chamber in a water cooling system of an internal combustion engine having the movable wall of the pressure chamber connected to means for adjusting the cam plate for obtaining the desired result and therefore I do not wish to limit myself to any particular means for accomplishing this result as I am aware that various changes can be made without departing from the spirit of my invention.

It is, of course, understood that the pump D for causing the cooling medium to circulate through the water circulating system is driven directly by the engine and therefore the speed of the pump is controlled by the speed of the engine so that when the engine is running slowly, the pressure in the pressurey chamber is less than the pressure in the chamber when the engine is running ata high rate of speed and as the speed of the engine increases, the pressure increases so as to automa tically adjust the cam plate.

The cam is connected to the arm 14 of the volume valve 13 by a link 32 so that as the cam is adjusted, the position of the valve 13 will be changed thereby increasing or decreasing the area of theexhaust inlet to the heatingjacket and while in the drawing I have shown the volume valve arranged in the inlet to the heat jacket, itis, of course, understood that it can be arranged in the voutlet withoutdeparting from the spirit of my invention.

In the construction of cam as herein shown,

it is held in adjusted position by frictional means which comprises a pin 33 secured in the wall of the heat jacket and extending through a slot 34 formed in the cam plate 27, said pin carrying a frictional washer 35 engaging the outer face of the cam in such a manner that the cam is free to move and yet is held in adjusted position under normal conditions.

In the construction of cam plate as herein shown, a slot 37 is formed therein having at one end a substantially vertical porti'onand a substantially horizontal portion which grad ually terminates in a downwardly extending portion. Slidably mounted within the slot of the cam plate is a member 38 provided with a roller having a guide flange for holding the same in the guideway formed by the slot so that it moves freely within the slotof the cam for the purpose hereinafter fully described.

The outer end of the member 38 is reduced as clearly shown on which is pivotally mounted a hub 39 having a socket 4() in which is secured an operating rod 41 which has its free end pivotally and adjustably connected to thearm 17 of the ex iaust gas throttling valve l5. rI'he member 38 is preferably provided with a rigid arm e2 which is pivotally connected at its free end to a pin at pivotally mounted on the outer end of the arm Ai5 secured on one end of the throttle shaft 2a whereby the member 88 travels vertically in the vertical portion of the slot 3T of the cam plate when the throttle valve is oscillated so as to allow the throttle valve to move a predetermined dist-ance before the movement of the arm carried thereby causes the arm of the exhaust throttle valve to move, whereby the exhaust throttling valve in the exhaust pipe will dwell on its seat' until the throttle valvev has moved a predetermined distance so that the throttle valve is allowed to move a certain distance before operating the exhaust throttle valve and the further movement of the throttle valve will cause the exhaust valve to open or move therewith, the movement of the exhaust valve in respect to the throttle valve being detern'iined by the shape and position of the slot in the cani plate,

From the foregoing description it will be seen that I have provided an automatic heat controlling means for a charge forming device wherein the application of heat to the charge being produced is automatically controlled by the pressure of the water cooling system of the internal combustion ei'iginc through the medium of the cani which allows the throttle valve to move predetermined distance before the exhaust throttl'ing valvestarts to move so that the application of heat will be controlled to a nicety.

In the operation of the heat controlling means, the tendency of the spring'v behind the movable wall of the pressure chamber is :to move the cam plate from the position shown in Figure l, which position will allow the full volume of exhaust gases to pass to the heatinv' chamber. Y

Then the engine is started, the pump is rotated so as to cause the water to circulate through the cooling chamber and the pres'- sure is built' up in the pressure chamber soas to move the wall upwardly against the tension of the spring and as the movable .val-i moves upwardly, the lever 29' isrocked on its pivot and the cam plate adjusted so as to decrease the heating effect of the heating' medium. Y

By constructing a heat controlling means in this manne-r, as the speed of the engine increases, thev deliveryl of heating mediuinto the heating chamber is gradually decreased, whereby I am able to control the application of heat by the pressure ofthe cooling sys'A tem, which in turn is controlled by the speed of the engine and thereby overcomes diffrculties now existing in the manually oper'- ated means, as in some instances the operator fails to shift the position of the cam and the charge isV overheated, while with my iniproved construction of heat control, the cam is automatically adjusted by the speed of the. engine.

That I claim is:

l. In a heat control for internal combustion engines having a forced feed water cooling system, the combinaiton with valves arranged to throttle the exhaust gases and explosive charge, of meansV controlled by the pressure of the water cooling system of the internal combustion engine to vary the effect of movement of the charge controlling valve on the exhaust controlling valve.

2.` The combinaiton with an internal combastion engine having a forced feed Water cooling system, of valves arranged to throttle the exhaust gases and explosive charge, meansv for connecting said valves, means for controlling the path of travel of said connecting means to vary the effect of movement of the charge controlling valve on the exhaust controlling valve and means controlled byk the pressure of the water cooling system for adjusting said means.

3. The combination with an internal combustion engine having a forced feed water cooling system, of valves arranged to throttle the exhaust gases and explosive charge and means operated bythe pressure of the water cooling system for adjusting said valves to vary the effect of movement of the charge controlling valve on the exhaust controlling valve.

1i In a heat control forr internal combustion engines having a forced feed water cooling` system, the combination Vith valves ar` ranged to throttle the exhaust gases and explosive charge and means operated by the pressure of the water in the cooling system to vary the effect of movement ofthe charge controlling valve on the exhaust controlling. valve.

5. In a heat control for internalcombustion engines having a forced feed water cooling system, the combination with Valves arranged to throttle the exhaust gases andexplosive charge, means for connectingsaid valves and pressure controlled means for control-ling the path of travel of said connecting mea-ns to vary the effect of movement of the charge controlling valve on the exhaust controlling valve.

6. The combination with an internal vcombustion engine having an exhaust passage, in-

take passage and charge forming device connected thereto, said internal combustion engine having a forced feed water cooling system, of a heater for heating the charge, a valve for'controlling the passage ofexhaust gases toY said heater, a valve for controlling the passage of explosive charge to said engine, a volume valve controlling the volume of exhaust gases passing to said heater, a movablev member for connecting said valves, and means controlled by the pressure of the Water cooling system for controlling the path of travel of said movable member to vary the effect of movement of the charge controlling valve on the exhaust controlling vaive.

7. The combination With an internal combustion engine having an exhaust passage, in-

take manifold and charge forming device connected thereto, having a throttle valve,

said internal combustion engine being pro.

exhaust, a valve controlling t-he volume of.

exhaust gases passing through said heater and means controlled by the pressure in the water cooling system to adjust the position of said valves to vary the eHect of the heat to the charge in said charge forming device.

8. The combination With an internal combustion engine having a forced feed Water cooling system, of a heater for heating the charge delivered to the engine, a valve for controlling the passage of the heating medium to said heater, a valve for controlling the passage of explosive charge to said engine, and means controlled by the pressure of the Water cooling system to vary the effect of movement of the charge controlling valve on the exhaust controlling valve.

9. The combination with an internal combustion engine having a forced feed Water cooling syst-em, means for heating the explof sive charge in its passage to the internal combustion engine, means for controlling the passage of explosive charge to said engine, means for controllino' the application of heat to said heating means, means connecting the last mentioned means to the means for controlling the passage of the charge to the eni gine, an adjustable member arranged to vary. 1

the volume of heating means in respect to the charge controlling means and means controlled by the pressure from the Water cooling system for adjusting said adjustable member.

lO. T he combination With an internal com-` bustion engine having an exhaust passage,

intake passage and charge forming device connected thereto, of a heater arranged around the intake passage, means for bypassing exhaust gases through said heater, an air heater arranged around said by-pass, a valve for regulating the volume of exhaust gases passing through said heater, and means controlled by the pressure of the Water in the Water cooling system for adjusting said valve to vary the heating effect on the charge and the air delivered to said charge forming device.

ll. The combination With an internal combustion engine having an exhaust passage, intake manifold and charge forming device connected thereto, said internal combustion engine having a forced feed Water cooling system, of a. heater for heating the charge in its passage to the engine, a valve for controlling the passage of exhaust gases to said heater, a valve for controlling the passage of explosive charge to said engine, a member having a connection with said valves, means arranged in the path of travel of said member to vary the effect of movement of the charge throttling valve on the exhaust throttling valve and means controlled by the pressure of the Wat r in the Water cooling system for adjusting said last mentioned means.

12. In a heat control for internal combustion engines having a forced feed Water cooling system, the combination With means for throttling the exhaust gases and explosive charge, a. member for connecting said means, a cani arranged in the path of travel of said connecting member, and means controlled by the pressure of the Water in the Water cooling system for adjusting` said cam to vary the effect of movement of the charge controlling means on the exhaust controlling means.

13. The combination with an internal combustion engine having an exhaust passage, intake passage and charge forming device connected thereto, said engine having a forced feed Water cooling system, of a heater for heating the charge in its passage to the engine, a valve for controlling the passage of exhaust gases to said heater, a valve for controlling the passage of explosive charge to said engine, a member having a connection With said valves, an adjustable member arranged in the path of travel of said member to vary the effect of movel'nent ofthe charge controllingvalve on the exhaust throttling,

valve and Vmeans controlled by the pressure of the Water cooling system for adjusting said adjustable member.

14. In a heat cont-rol for internal combustion engines having a forced feed Water cooling system, the combination with means for heating the explosive charge, means control- `ling the application of heat to said heating vmeans, means controlling the passage of ex-v l plosive charge to said engine, means for conneeding said controlling means and pressure controlled means operated by the pressure of the Water cooling system to vary the effect of movement of the charge controlling valve on the exhaust controlling valve.

15. The combination with an internal combustion engine having an exhaust passage, intake manifoldand charge forming device connected thereto, said enginer having a forced feed Water cooling system, of a heater for heating the charge in its passage to said engine, a valve for throttling the passage of exhaust gases through said exhaust passage means for conveying exhaust gases from said passage to said heater, a volume valve controlling the passage ofrexhaust gases from said heater, a throttle valve for said charge TIG recarga.

forming device, a plate provided With a guideway disposed adjacent said charge forming device, a member mounted in said plate having a connection With said valves, and means operated by the pressure in the Water cooling system for adjusting said plate to vary the effect of movement of the throttle valve on the exhaust throttling valve.

16. In a heat control for internal combustion engines having a forced feed Water cooling system, means controlled by the position of the throttle valve controlling the application of heat for heating the charge in its passage to the engine and means for operating said last mentioned means controlled by the pressure of the Water cooling system.

17. In a heat control for internal combustion engines having a forced feed Water cooling system, the combination With valves arranged to throttle the exhaust gases and explosive charge, a member connecting said valves, a guide member for said connecting member, and means controlled by the pressure of the water cooling system of the internal combustion engine to adjust the position of said guide means to vary the effect of movement of the charge controlling valve on the exhaust cont-rolling valve.

18. In a heat control for internal combustion engines having a forced feed Water cooling system, the combination with valves arranged to throttle the exhaust gases and explosive charge, a member having a connection with said valves, a cam plate in Which said member is adapted to travel and means controlled by the pressure of the Water cooling system of the internal combustion engine for adjusting said cam plate to vary the effect of movement of the charge controlling valve on the exhaust controlling valve.

19. An internal combustion engine having a forced feed Water cooling system, a heat controlling means for the charge forming device thereof, and means controlled by the pressure of the Water in the cooling system for controlling the application of heat to said charge forming device.

In testimony whereof I hereunto affix my signature.

REA P. WRIGHT. 

